Shoe lug



Feb. 12, 1929;

O. H. JUNG "SHOE LUG Filed March 25, 1927 Patented Feb. 12, 1929.

unrrun srA'rEs PATENT OFFICE- OSCAR H. JUNG, 01E MILWAUKEE, WISCONSIN,ASSIG-NOR TO TRICO FUSE MFG. 00., OF'

MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

SHOE LUG- Application filed March 25, 1927; Serial No. 178,465.

This invention relates to shoes and is particularly directed to a lugfor use with a shoe intended primarily for athletic purposes where it isdesirable to secure a firm grip upon the ground.

It frequently happens that players are re quired to play upon ground ofextreme softness, such, for example, a muddy field and upon ground whichis not sosoft, and consequently do not require as large or extensivelugs fOl'llllGlI shoes as the first type of ground.

Attempts have been made to provide removable lugs for the shoes whichmay be substituted one for the. other, but these attempts have notproven wholly satisfactory, as the lugs pull ofi from the soles on theone hand,

' and also as it is difficult to secure a rigid attachment of theremovable lug and at the same time permitting easy substitution of onelug for another.

This invention is designed to overcome the defects noted above andobjects of such invention are to provide a novel form of lug soconstructed that it may be readily secured to the sole of a shoe in amanner to prevent tearing off of the lug from the sole even underexcessive strains, but which is secured to the sole at widely spacedpoints, so that the resistance to a turning moment is very great indeed.

Further objects are to provide a novel form of lug in which a plate-likemember is rigidly secured to the sole of the shoe by prongs projectingupwardly from its edges, so that they are widely spaced and whenprojected into the sole and clamped thereto, provide a very secureattachment for the plate at widely spaced points to thus eliminate alltearing of the lug from the sole and all relative turning of the lugwith respect to the sole.

An embodiment of the invention is shown in the accompanying drawings inwhich Figure 1 is a View from the underside of the shoe equipped withthe lugs.

Figure 2 is an enlarged sectional view'on the line 22 of Figure 1 Figure3 is a sectional view on the line 33 of Figure 2.

Referring to the drawings, itwill be seen that the shoe is provided witha sole 1 to which a plate 2 is attached. This plate is preferablydisc-like, although obviously other shapes could be employed. It isprovided with a plurality of regularly spaced 7 integral prongs 3extending upwardly from its edges and passed-into and clinched to thesole of the shoe, as shown in Figure 2. These prongs are at widelyspaced points as is apparent from Figures 2 and 3 and, consequently,prevent any turning whatsoever of the lug with reference to the sole.The plate'2 is provided with a depressed apertured portion whichreceives the threaded stud 4, as shown in Figure 2. This'threaded studis provided with a reduced portion 5 which is passed through theaperture and is subsequently headed, as indicated at 6. It is preferablywelded to the plate 2 to secure the utmost rigidity. This construction,coupled with the fact that an abrupt shoulder is formed, as indicated bythe reference character 7, against which the underside of the plate 2bears, se-

cures the maximum rigidity and strength of attachment between the studand the plate. The removable or interchangeable lug is indicated by thereference character 8 and is preferably in the shape of a truncatedcone. It is also preferable to form these lugs of fibre to secure themaximum lightness, although retaining the necessary strength. The lugsare centrally apertured and may themselves be threaded, if desired.However, in the form shown, the lug is provided with a reenforcingmetallic sleeve 9, internally threaded to receive the stud 4. Thissleeve is driven into the drilled out hole 10 in the lug and it is to benoted that its edges are slightly swaged out, as indicated at 11, toprovide a plurality of gripping ears seated within the body of the lugto thus prevent loosening of the reenforcing sleeve and prevent relative rotation between the sleeve and the lug. It is preferable toslightly bore out the upper end of the-sleeve 9 to provide a thinnedflange 11, as shown most clearly in Figure 3, to facilitate theformation of the ears or lugs 11. It is also preferable to provide arecessed portion in the upper face of the lug which accommodates thedepressed portion of the plate 2, such depressed portion being indicatedby the reference character .13, and be ing employed to accommodate thehead 6 of the stud. The lug is provided with an annular shoulder orabrupt face 14 which, when the lug is screwed in place, firmly bears atthe marginal edges of the disc 2 .andthus is supported from the discalong a surface spaced outwardly from the centerpoint of the disc. Thus,the maximum resistance to turning is secured by this construction andthe pin or and as-the scope of such invention is to be destud 4 isrelieved of a considerable amount of stra n which 1t would otherwisebear.

"By forming the lug of fibre and thesleeve of metal a verylight andstrong structu'reis 7 obtained and one which may be very-cheaply e r athreaded aperture for the reception of said stud and having a centrally"cut-away upper manufactured. a V 7 Although the invention has beendescribed in considerable detail, such description isintended asillustrative rather than limiting as-the invention may be variouslyembodied termined as claimed. *I' claim V v a The combination of a.shoe, a circular plate haying-a plurality of integral prongs'projectingfrom its edgesand extending into the sole andclinched thereto, saidplate having a recessed portion centrally apertured, a

threaded stud projecting through tl 1e"aper ture in the recessed portionand having a head seated W1th1n the recessed portion, and a reniovablelug oftruncated conical contour having areentorcing :sleeve providedWith portion extendinga material distance radially outwardly from saidstud, whereby an annular bearing surface is provided on the lug Whichcontacts {With the underside of the plate adjacent its margin.

In testimony that Ifclaim the foregoingl have hereunto set my hand atMilwaukee, in

the county of liiilwaukee and State of Wisconsm, a

OSCAR JUNGQ

